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U.S. STEEL DUQUESNE WORKS HAER No. PA-115 (Page 87) H. Pump Tank at Gas Cooling Towers: Located near each of the gas cooling towers is a 3'-0" diameter pump tank. The pump tank at the gas cooling tower near blast furnace number three is 16*- 2" high. The pump tank at the gas cooling tower near blast furnace number four is 19'-10" high. The tanks hold water which has been used in the gas cooling towers so that it can be redirected to pumps feeding the venturi gas washers. Installation Date: 1971. I. Pump House Building for Gas Cleaning Equipment at Blast Furnaces Numbers Three and Four: A 15'-0" wide x 45'-0" long x 12*-o M high concrete block building, laid out on a north - south axis, is located between the gas cleaning facilities at blast furnace numbers three and four. The building contains pumps for the venturi gas washers and the gas cooling towers. Construction Date: 19 61. 1. Venturi Gas Scrubbers Pumps: Along the eastern wall of the building, laid out on a north-south axis, are three 1950 gpm Wilson-Snyder pumps, each powered by a 100 hp motor. Installation Date: 1971. 2. Gas Cooling Tower Pumps: Along the western wall of the building, laid out on a north-south axis, are three 4150 gpm Wilson-Snyder pumps, each powered by a 75 hp motor. Installation Date: 1971. J. Strainer Building: Located approximately 90 f -0" south and 30*-0" west of the gas cooling tower at blast furnace number four is the 15*-0" wide x 30'-0" long x 12'-0" high concrete block strainer building. The building, which is laid out on a north- south axis contains two 16" motorized Helan strainers. Const ructi on Date: 1971. Installation of Strainers: 1971. K. Primary Gas Washer for Dorothy Six: Located 35'-2 1/8" northwest of the dustcatcher on the grounds of the remains of Dorothy Six is a 21'-0" diameter, 190,000 scfm venturi type primary gas washer manufactured by the Chemical Construction Corporation. Installation Date: 1962. L. Gas Cooling Tower for Dorothy Six: A 24'-0" inside diameter gas cooling tower is located 68 f -0" northwest of the primary gas washer on the grounds of the remains of Dorothy Six. Manufactured by the Chemical Construction Corporation, the
cooling tower has a capacity of 190,000 scfm. Installation Date: 1962. U.S. STEEL DUQUESNE WORKS HAER No. PA-115 (Page 88) M. Pump House Building for Dorothy Six: The 33'-6" wide x 36'- 0" long pump house makes up the ground floor of the East Service Building which is located between the primary gas washer and the gas cooling tower at Dorothy Six. It contains motor/drive/pump assemblies which relate to the gas cleaning process as well as blast furnace cooling. Gas cleaning related equipment includes two 2400 gpm Wilson-Snyder gas cooling tower centrifugal pumps each powered by a 100 hp Westinghouse Life Line Motor rated at 1780 rpm and two 2400 gpm Wilson-Snyder primary gas washer centrifugal pumps each powered by a 2 00 hp General Electric Custom 8000 induction motor rated at 1770 rpm. Construction and Installation Date: 1962. N. Ferr-Qroanganese Gag Cleaning Plant: A 90'-O" high rectangular steel framed structure covering 150'-0" sq. ft. is located approximately 30'-0" south of blow engine house number one. The six story high open air structure contains five ferromanganese gas cleaning systems arranged in parallel and the remains of five ferromanganese briquetting systems also arranged in parallel. The equipment making up each gas cleaning system is laid out on a north - south axis and consists of a 8'-0" diameter refractory brick lined rough gas main, a 15'-0" diameter x 60'-0" high gas conditioning tower, a 3*-6" diameter refractory brick lined downcomer pipe, and an electrical precipitator. The equipment making up the remains of each briquetting system, also laid out on a north-south axis, consists of a rotary screw conveyor manufactured by the Fuller Company and a bottom fired kiln manufactured by the Perkins Dryer Company. Construction Date: 1953. 0. Electrical Precipitator: Located approximately 30 f -0" east of (and between) the hot blast stoves for blast furnaces numbers three and four is an approximately 20'-0" electrical precipitator. Installation Date: 1951. III. Water Treatment Facilities: A. Slurry Water Pumps: Located directly underneath each of the gas cooling towers at blast furnaces numbers three and four are two 1300/2000 gpm slurry water pumps manufactured by the Wemco Company. Each pump is powered by a 60 hp motor. Installation Date: 1971. B. Quick Dump Sump and Lift Pumps: A 14'-0" wide x 16'-0" long x 6'-9" deep quick dump sump is located approximately 15■-0" west
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construction carbon and alloy steel
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